In our environment, we do have about 6000 + servers, We daily face  " RDP Issues".

Kindly suggest from the basic troubleshooting for this issues. (Sorry as am tired of reboot the VM and servers)

Background check on server end to avoid frequent reboots for RDP issues.

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Could it be a disconnection of the VM NIC during a volume snapshot?
Sometimes we have had the issue when the snapshots directory does not have enough space and the VM NIC disconnects...
Anything in the VM logs?
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
In fact, this is no RDP issue. The error message clearly states that the login did not work because no DC has been found (if used). Should "CRB" be the machine you want to remote into, than it is different. However, I reckon if you would try to log in on that machine "physically" (e.g. VMWare Console or similar), you would get the same error.

Assuming we are talking about using domain logins here, it seems that the query for active DCs times out. Maybe not enough DCs running?
DNS not refreshing and missing some of the DC entries?
Checking the EventLog of a machine you fail to RDP in might reveal some suspects.
Does repeating the login succeed at some point?

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ashvidraAuthor Commented:
Qlemo and Biaselectronics : Thank you for your time

We have Checked all logs but we are not able to find any solution directly.

No Snapshots in our environment.

Below are some steps i tried but it is not working

followed in Domain Login credentials

1. Power off the VM.
2. Power on

Didnt work

3. Reset the VM - didnt work

4. Login with Local Admin

        a. Remove it from Domain
        b. Remove the server from AD
        c. Rejoin
        d. Rejoin in Domain
Still its not working

So I want to know whether am troubleshooting in correct way or not ?

Note : Am not particular with VM only
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Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
Your troubleshooting steps are sound.
You are able to unjoin from domain, and rejoin without issues? That surprises me, as this requires more control over domain controllers than the login process ... So again, does repeating the login succeed at some point? Is the issue consistent with single VMs (if focussing on those), or spread widely?
What do your Active Directory sites look like?  These machines should belong to a site defined by subnet.  This ensures that they attempt a certain set of DCs first.

If they don't belong to a defined site, then they will randomly attempt any DC that's listed.  If you have several DCs that were not decommissioned properly (or are offline), then you might fail at login, even if there are other DCs online and functioning.
ashvidraAuthor Commented:

Not only for Single VM's even we face issues with Physical server too.
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
That is the answer to only one of my questions ;-).
ashvidraAuthor Commented:
@qlemo : Sorry we are not able to rejoin the server to Domain.

secondly, We still not able to login to the server.
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
Ok, that sounds more reasonable. You have issues either finding or contacting domain controllers. I have no experience with large networks, so I will add more Topic Areas and send out a call for more knowledgable experts.
ashvidraAuthor Commented:
Qlemo : Thank u

Question to you : What you will do in a small environment (Troubleshooting) that will help me to understand the issues better
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
Difficult, because the issue won't happen in a small env - unless you try to login via very slow connections, that is (low bandwidth VPNs, for example).
On a server I would log in with a local account, start a network capture with WireShark or MS NetMon (or MS Message Analyzer), and without logging out starting another RDP session with a domain account. But that requires a lot of effort and knowledge - the network capture isn't something you can read as easy as a novel ;-).
Aaron TomoskyDirector of Solutions ConsultingCommented:
+1 on looking at sites and services. Also download adrepstatus from microsoft and run that.
You haven't described the topology.  How many AD sites, how many DCs, etc.
ashvidraAuthor Commented:
Thanks for ur help mates
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
Have you been able to detect the reason for your login issue?
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